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/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup tls_alert tls_alert
* @{ @ingroup libtls
*/
#ifndef TLS_ALERT_H_
#define TLS_ALERT_H_
#include <library.h>
typedef struct tls_alert_t tls_alert_t;
typedef enum tls_alert_level_t tls_alert_level_t;
typedef enum tls_alert_desc_t tls_alert_desc_t;
/**
* Level of a TLS alert
*/
enum tls_alert_level_t {
TLS_WARNING = 1,
TLS_FATAL = 2,
};
/**
* Description of a TLS alert
*/
enum tls_alert_desc_t {
TLS_CLOSE_NOTIFY = 0,
TLS_UNEXPECTED_MESSAGE = 10,
TLS_BAD_RECORD_MAC = 20,
TLS_DECRYPTION_FAILED = 21,
TLS_RECORD_OVERFLOW = 22,
TLS_DECOMPRESSION_FAILURE = 30,
TLS_HANDSHAKE_FAILURE = 40,
TLS_NO_CERTIFICATE = 41,
TLS_BAD_CERTIFICATE = 42,
TLS_UNSUPPORTED_CERTIFICATE = 43,
TLS_CERTIFICATE_REVOKED = 44,
TLS_CERTIFICATE_EXPIRED = 45,
TLS_CERTIFICATE_UNKNOWN = 46,
TLS_ILLEGAL_PARAMETER = 47,
TLS_UNKNOWN_CA = 48,
TLS_ACCESS_DENIED = 49,
TLS_DECODE_ERROR = 50,
TLS_DECRYPT_ERROR = 51,
TLS_EXPORT_RESTRICTION = 60,
TLS_PROTOCOL_VERSION = 70,
TLS_INSUFFICIENT_SECURITY = 71,
TLS_INTERNAL_ERROR = 80,
TLS_USER_CANCELED = 90,
TLS_NO_RENEGOTIATION = 100,
TLS_UNSUPPORTED_EXTENSION = 110,
};
/**
* Enum names for alert descriptions
*/
extern enum_name_t *tls_alert_desc_names;
/**
* TLS alert handling.
*/
struct tls_alert_t {
/**
* Add an alert to the TLS alert queue, will be sent.
*
* @param level level of TLS alert
* @param description description of alert
*/
void (*add)(tls_alert_t *this, tls_alert_level_t level,
tls_alert_desc_t description);
/**
* Get an alert pushed to the alert queue, to send.
*
* @param level receives TLS alert level
* @param description receives TLS alert description
* @return TRUE if returned an alert
*/
bool (*get)(tls_alert_t *this, tls_alert_level_t *level,
tls_alert_desc_t *description);
/**
* Did a fatal alert occur?.
*
* @return TRUE if a fatal alert has occured
*/
bool (*fatal)(tls_alert_t *this);
/**
* Process a received TLS alert.
*
* @param level level of received alert
* @param description alert description
* @return status to pass down to TLS stack
*/
status_t (*process)(tls_alert_t *this, tls_alert_level_t level,
tls_alert_desc_t description);
/**
* Destroy a tls_alert_t.
*/
void (*destroy)(tls_alert_t *this);
};
/**
* Create a tls_alert instance.
*/
tls_alert_t *tls_alert_create();
#endif /** TLS_ALERT_H_ @}*/
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